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UK paraplegic woman first to take robotic suit home

By Chris Wickham

LONDON (Reuters) - A British woman paralyzed from the chest down by a horse riding accident has become the first person to take home a robotic exoskeleton that enables her to walk.

Although bionic exoskeletons have been used in hospitals and rehabilitation centers, Claire Lomas is the first to take the ReWalk suit home for everyday use.

Lomas earlier this year used the suit to complete the London Marathon in 17 days, raising about 200,000 pounds ($317,900) for research into spinal damage, and she was recently given the job of lighting the Paralympic cauldron in Trafalgar Square.

But she said more routine activities are equally gratifying.

"One of the best experiences was standing at a bar," she said. "To be stood up in this means everything to me."

Larry Jasinski, chief executive of Argo Medical Technologies, the company that developed the suit, told Reuters he was initially nervous about backing the marathon bid because the suit was still being tested but Lomas said it held up well.

"The suit was really reliable in the worst weather and I got there 17 days later," she said.

The exoskeleton is activated by the wearer tilting their balance to indicate the desire to take a step. It supports the body's weight and also allows the person to go up or down stairs, as well as sit or stand up independently.

It costs 45,000 pounds and although clinical studies are ongoing that could back a case for health authorities to fund purchases of the device, the developers argue that savings on the treatment of ailments related to inactivity could offset the cost.

Paralyzed people are prone to pressure sores and a loss of bone density, as well as problems linked to poor posture. Jasinski said estimates on the cost of treating these range from $500,000 to $3 million over a patient's life.

The company estimates that of the 6 million wheelchair users in the U.S. and Europe, around 250,000 could be suitable for using the ReWalk device.

A report in 2010 by U.S. firm ABI Research forecast the market for this technology could be worth $320 million within 10 years.

In the meantime, says Jasinski, the U.S. and Israeli military have shown an interest for use by injured soldiers.

Research into exoskeletons goes back 50 years but advances in software management systems and sensors have only recently made them practical.

Argo, which is backed by Israeli venture capitalists SCP Vitalife and Israeli Healthcare Ventures, is working on a similar device for quadriplegics, as well as a brain interface that could allow more intuitive 'thought control' of the exoskeleton.

Although Jasinski says this is still years away, scientists have recently unveiled devices that can be controlled in real time by thought using advanced brain scanning.

Others are working on materials that can interact with human nerves and tissue that could eventually lead to prosthetics that are fused with the body and controlled directly by the nervous system.

In June, a team at Maastricht University in the Netherlands unveiled a device that uses functional magnetic resonance imaging, which monitors blood flow in the brain, to allow people to spell out words simply by thinking of each letter.

Another experiment reported in July saw FMRI used by a man at Bar-Ilan University in Israel to control the movements of a robot thousands of miles away at Beziers Technology Institute in France.

Lomas said that after her accident, she rejected pleas from doctors to give up on the idea of using her legs, saying that as a young, active woman before her 2007 accident, "I didn't want to have a big stomach and spindly legs".

Since the accident she has got married, had a child, and next year plans a London-to-Paris bicycle ride using a so-called Functional Electrical Stimulation bike that artificially stimulates the paralyzed rider's own muscles to propel it along.

($1 = 0.6292 British pounds)

(Editing by Paul Casciato)

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